Welcome to the hobby!

For home-grown hops, I'd focus on something you'd want to use as an aroma addition or a dry-hop, e.g. Citra for citrus-forward beers. See what rhizomes are available for purchase and look up their flavor/aroma profiles and buy what looks enticing!

I would gently recommend against homegrown hops for bittering - it can be difficult to know how much bitterness a hop variety will impart if you don't know its precise alpha acid content - something that you'll get right on the label for hop pellets. Furthermore, the character of a homegrown hop - which is unique and special - will be best expressed when used as a flavor or aroma hop.