My then-17 year old son wanted to build an AR for his HS graduation present.
Chose 6.5 Grendel and we sourced all the parts required.
Brownells has a very useful checklist, and online videos for assembly. The FFL that supplied us with some parts also recommended Glen Zedicker's book, which was very helpful as well.
My son had little to no experience with hand tools, at all...
Assembled it in one evening.
Many tools are convenient, but unnecessary. Requirements depend on build specifics. Pin punches, upper and lower receiver holders for your vise. Most everything else should already be in your toolbox. Double check all your parts lists- it's easy to miss something.
Do it and have fun, it's not rocket science.