Welcome Lori,
As others have already mentioned, figure out which version you want to make. The details differ.
Also, bear in mind that Boba is one of the most complex costumes to make, whether you're buying pre-made parts, or making your own stuff from scratch.
A good idea would be to make a list of all the different components of the costume, and then figure out what you'd be able to do yourself, and which parts you'll have to "contract out."
There are lots of upgrades available for basic costume parts too. An example would be adding some aluminum gauntlet darts, instead of homemade or resin ones.
And research, research, research! There's a whooooooooole lotta info on this board. Make sure you start saving pics to have something to go by once you start construction.
Eric