I see people giving you advice on weapons and builds suitable for veteran shielders, not taking into account who asked for the advice ...
As a veteran shielder myself, with many generations in a row beforer going max level, best advice i can tell a noob shielder is that you stick with a 18/18 build with 6 ath, 6wm, 6ps,6shield and 5 if, and use a 1h sword that is LONG (nordic champion's sword, knighly arming sword, italian sword), and a durable shield (Huscarl, heavy heather, heavy kite). With short weapons, you'll end up hitting the air many times, as you still don't have the right timing and you'll open your defense, and you still don't have the footwork needed to use them properly (you'll get it in the future). The build I told you is reasonably quick and reasonably strong and durable for a starter. Don't go hybrid with throwing or anything else, first try to learn one style, then you can try another.
Use a medium armor, something in the 37-43 non-loomed armor stat (not more than 13 kg). It won't punish your movement as much as heavy and gives more than enough protection for a shielder. But buy the good shield and weapon before the armor, they'll be far more useful.
Use it for 2 generations till you get the mechanics, then you can experiment yourself, use another builds or shorter and more powerful weapons, but for now, use the standard build I told you which is the one you'll get more benefits from.
