Well that depends on you. For attributes you'll roll 4d6 and drop the lowest. You can reroll 1s and use the reroll if its higher.

Your race pick is up to you as well as your class. Some races are better at some things but if you wanted a Goliath wizard or a halfling barbarian that's ok.

If your ok with signing up for it dndbeyond makes character building pretty easy. The layout for mythweavers is closer to an actual character sheet and does require more work, but it makes it so all the info is right there and you do not have to sift through different pages to get to the information you need.