Growing a YouTube channel comes down to two things you can work on: getting the right people to click (titles, thumbnails, topics) and keeping them watching (hooks, structure, pacing). This hub lists the resources that help with each, starting with the free ones, and says plainly who each paid option is for.
Disclosure: Asendify makes several of the resources below (a book, a course, an agency, an AI tool and free tools). They are ours. Free resources by YouTube and others are listed first because most creators should start there.
What this category covers
- Retention: why viewers leave and how to edit so they stay.
- Packaging: titles, thumbnails and upload consistency.
- Analytics: reading YouTube Studio and turning numbers into decisions.
- Help with the work: learning it yourself, getting feedback, or hiring an editor.
Start here: the best free resources (not ours)
- YouTube Help: audience retention. YouTube's own guide to the retention report, including the intro (share still watching after 30 seconds), top moments, spikes and dips, and how to compare with typical retention (YouTube Help). If you read one page, read this one.
- YouTube Creators. YouTube's official creator site with guides on getting started, growing, and how things work.
- YouTube Studio. Your own analytics are free and are the only source of your real retention, traffic and click-through data.
- Your own best videos. Re-watching your top-retaining videos next to your weakest ones is free and often the most useful lesson.
Free tools from Asendify
- YouTube Channel Roast: paste a channel link and get a score out of 100 for titles, thumbnails and upload consistency, blunt roasts and 3 fixes. No sign-up, 3 roasts a day. It uses public data only, so it cannot judge hooks or retention.
- YouTube Hook Checker: paste your intro script and get a score out of 100 with fixes for the first 30 seconds: promise, proof, open loops and pacing. Text only; it cannot see your edit.
- Retention Curve Checker: paste retention numbers to see the biggest drops with timestamps, the 30-second hold and rewatch spikes.
- Asendify Daily: a free 2-minute daily game; one of its question types is "Would viewers keep watching or leave?".
Paid options from Asendify, and who each is for
| Option | What it is | Price | Best for | Not for |
|---|---|---|---|---|
| Secrets to become a celebrity on Youtube | Retention editing playbook, PDF, 38 pages, 13 parts | £304.50 one-time | Creators and editors who want the method in one place | People who want feedback on their own videos |
| Retention Editing Accelerator | 6-week online cohort, weekly lessons, live group sessions and feedback on your own videos; includes the book | £2,023.91 one-time | Creators and editors who learn best with feedback (next round 16 Nov 2026, 10 seats) | Anyone wanting software tutorials, or someone else to do the work |
| Asendify AI | AI that connects read-only to YouTube Studio and answers from your channel's own retention, titles, traffic and CTR data | £1,305 a month, prepaid packs from £5,220 (4 months) | Established channels that want fast analysis of their own data | New channels, or anyone wanting a free trial (there is none) |
| Asendify agency | Retention-engineered, hand-made editing with a dedicated editor | Growth Plan £840 a month, Elite Club from £14,000 a month | Channels that want done-for-you editing and can wait | Anyone who needs an editor now: both tiers are full, waitlist only |
Prices include Asendify's 45% service fee where it applies.
Which route fits you
- Just starting, little budget: the free YouTube resources, then the Roast and Hook Checker on every upload.
- Posting regularly, want a method: the book, then the free tools to apply it.
- Want someone to look at your actual videos: a course with feedback, such as the Accelerator.
- Large channel, lots of data: an analytics AI that reads your Studio data.
- No time to edit: an editor or agency. Asendify is currently waitlist only, so compare other agencies and freelancers too.
Guides, comparisons and round-ups in this category
- Best books on YouTube editing and retention in 2026
- Best retention editing courses in 2026
- Is a YouTube editing course worth it?
- How to improve YouTube audience retention
- How to read your YouTube retention graph
- YouTube hooks: the first 30 seconds
- Why viewers leave YouTube videos
- Retention editing vs regular video editing
- How much does YouTube video editing cost?
- Freelance editor vs agency
- Free YouTube Retention Revenue Calculator
FAQ
What is the single best free resource for YouTube growth?
YouTube's own help page on the audience retention report, used alongside your YouTube Studio data. It is official, free and specific to your videos.
Do I need a paid course to grow on YouTube?
No. Many creators grow with free resources and steady practice. A paid course mainly buys structure and feedback on your own videos.
Is the Asendify agency taking new clients?
Not right now. It works with five clients at a time and both tiers are full, so new clients join a free waitlist and are contacted in order.
Does Asendify AI edit or upload videos?
No. It has read-only access and cannot upload, edit, post, comment or delete. It also does not look at thumbnail images.
More playbooks on other topics: https://www.asendify.co/books/