What folly's place said I wouldn't get a a horse for a few years instead I would spend a lot of time at a good trainer places stable and riding there horses and helping and then when you do get a horse have the person come with you when you go to look at them or if they have one you really like...
My saddle probably weighs like 20 pounds but it is lighter made so if you have a bigger one like my dad or grampa does probably talking maybe 45 lbs that's the biggest ones we have