After selecting "Prepare for the Journey Carefully" you'll arrive at the preparation screen.
On the left is the list of the starting members of your fortress. On the right is the list of skills that you can give them to start with (several pages worth) You start with a basic equipment setup including food/seed and equipment as well as 225 points for skills and additional equipment. Each character can be given up to 10 skills (each rank of the skill also counts as a selection). Each rank of a skill has an increased cost associated with it (5/6/7/8/9pts.)
Basic roles that need fulfilling are:
Mining (usually 2 miners)
Wood Cutting
Carpentry
Masonry
Food Acquisition (Fishing/Farming/Hunting/brewing)
Medical (I haven't played much since the update with the whole medical system so I'm not sure how vital it is at the start)
Record Keeper (some leadership/appraising skills for when trade caravans come by you can get a fair trade going.)
Tasks like farming will not use up all of a character's time so they can take up multiple jobs. There are many professions in the game but as migrants arrive later these spots wont feel so stretched out. You can find a full list of skills here
http://df.magmawiki.com/index.php/DF2010:Skill
For our game I outfitted our ponies thus (Also Names Finally!):
Pony #1
Name: Auger (A tough name for our tough little filly head-miner. Also in charge of getting some of the big buildings designed)
3 pts. Mining (Usually set higher but wanted to spend points on more diverse characters)
2 pts. Architecture (used in a few buildings, doesn't interfere to much with mining)
Pony #2
Name: Shy Leaf (Working out in the trees with some time to herself, but ready to bring that axe to protect her friends)
2 pts. Woodcutter (Much needed resource for beds/doors/chairs)
2 pts. Surgeon (not sure what it does but comes recommended)
2 pts. Axe-pony (Good to combo with woodcutter since they are using an axe anyway. Learn to chop down more then just trees!)
Pony #3
Name: Prickly Pear (Carrying on in the Cacti family name, this little pony sees to the farming as well as being a proficient mason)
2 pts. Mason (Primary job used to make doors, etc. Farming is part time and wont consume to much time so I added it to our mason)
2 pts. Herbalist (plant gathering for safe early food)
2 pts. Grower (Farming skill)
Pony #4
Name: Sawdust (dedicated to his work, even if he lets his person life suffer for it. Probably not the best pony to go to for a cheering up.)
2 pts. Carpenter (Primary role, used to build doors/furniture larger wood objects)
2 pts. Woodcrafter (for more intricate wooden items like ammo/toys/trinkets to sell)
2 pts. Stonecrafter (same as wood crafting but for stone)
Pony #5
Name: Saddlebags (Forever the assistant, he's a bit to uptight to really relax and work towards a goal before getting distracted.)
2 pts. Miner (Assistant miner so I didn't spring for the 3rd rank)
2 pts. Wound Dresser (for when those ponies hurt themselves)
2 pts. Diagnostician (To assist the surgeon)
1 pt. Dodger (He's such a skiddish pony I gave him a little boosty in the danger avoidance category)
Pony #6
Name: Sweet Mead (The "soccer-mom" of the team, she works hard to ensure that everypony's stomach is full at the end of the day.)
2 pts. Cooking (Converts raw food such as meat and fish to meals that improve the eater's mood)
2 pts. Brewing (Makes drinks from plants which is vital to survival in this game since the characters get sick of water real fast.)
1 pt. Fishing (A safe and easy method of getting food)
Pony #7
Name: Cornerstone (Determined to create a town of their our, our leader is organized and ready to wheel and deal with whatever civilizations they come across.)
2 pts. Record Keeper (keeps track of all your fortress inventory. Deteriorates over time)
2 pts. Negotiator (Skill for dealing with merchants and diplomats)
2 pts. Appraiser (evaluates the cost of trade goods and the current wealth of your fortress)
I used the remaining points for more food and 2 cats (DF is notorious for something call the catsplosion in which cats become very numerous and slow the fps of the computer down. If managed properly cats can be an invaluable emergency food supply >.>)
Now that we have our destination, skills and equipment it's now time to start building our new home!
Onward to "Clearrains"!