Any courses that aren't insanely expensive?

I've been a leather craft hobbyist for a few years now and always wanted to attempt boots but it seems that this corner of the hobby has very little information out there that isn't pay walled with prices set at silly levels for the average hobbyist who wants to have a go for the first time without paying hundreds or even thousands of pounds.

Any recommendations for places I can go to for step by step style content that's either very affordable or free? There's tons of that stuff out there for leather bags and things like that but for boots and shoes I've found nothing so far that teaches you how to make a full pair of shoes or boots start to finish.