this site should give you quite a bit of info.
Get maps at the Green Mountain Club store.
I have hiked Abe a few times, Camel's Hump and Mansfield more times then I can count. I would guess between 30-50 each (I live in the Champlain Valley for over 20+ years and climb each at least 1X per year. My favorite Mansfield routes are all from the BTV side. They involve 1 or more of the Sunset Ridge, Maple Ridge or Long trail south of the forehead. Cliff trail is a good way to make a loop out of the walk from the forehead to chin, if you like to scramble and conditions are dry. Camel' Hump from the Huntington side has a nice mile long walk along a brook for a warm up if you park at the small lower lot. I love the long trail approach from the south (wind gap) for fun, easy scrambles and views. Banforth ridge offers a less crowded longer approach. Also has great views in spots.