I need help on gaining weight?!

I need help on gaining weight?

1.)what foods help with weight gain
(2.)how long do you think it will take to gain a good and healthy 17lbs?
(3.)are potatoes and bananas good to gain weight or will eating two of these just make you fat?
(4.) how much should i exercise and what kind should i preform? and how heavy shoul my weight i lift be if i just started?
(5.) how many pant sizes do you think 17 lbs is?
(6.) what kind of ground beef should i use lean or regualar?
5ft 5in and 102lbs

1) to gain weight & muscle u must take in more protein
2) 3-4 months
3) fat
4) you should take some weight exercise

i have a friend use a protein shake to gain weight. he gained 12lbs muscles in 2 months~ so i think u can gain 17 lbs in 3-4 months~
if u want to know the brand, add my msn: aliceki01@netvigator.com, icq:65207470 or email: alicekii@gmail.com
i can show u some photos of my fd~^^