Just received 4 plants believed to be hash plant. Need some help!!!

Well my friend's moving and offered me the four plants. He thinks their seeds from our friends recent hash plant grow. I have never grown before but have done lots of research and reading... 1 plant is definatley female(it has already preflowered), I believe they are all ready to be flowered.. Only problem is that on a couple of the plants leaves are turning yellow.. Was hoping someone could help me out with this.. Could these plants be nurtured back to good health or is it a waste of time?? Thx Will try to load up some picss later

If there yellowing from the bottom up prolly nitrogen def. You need to get a fertilizer with high nitrogen rating give them some of that they will bounce back. I give mine some high nitrogen bat guana when my plants start to yellow up.

can you get us a pic? Probably needs to be repotted with quality soil, and some light nutes.

Yeah I took sum pics today.. They look a lot better since last time i saw them.. yea ill definatley try n find sum high nitrogen nute.. plant 3 and 4 were attemted to be LST'd but i guess he gave up and let them loose.. anyone have any ideas where these are indica or sativa dom.?? should i cut sum of lower fan leaves that are yellowing?..