Ok so I have 13,000 and some Tech points which Tech Item should I buy? Should I get the coconut tree (note they only have 156 food) or the Dam (Engineering Tech) other (Farming) They both will contain getting food but what should I get. Or should I get them both?

Get them both.

both.

All this depends on how many villagers you got. If you have less than 15:

Get level 2 in engineering and level 2 in farming. That's 6500 points. Save the rest for next level in science. It will enable you to gain tech points faster. After that - go for level 3 farming.

That's my advice, but it is, of course, up to you to decide what's best for your tribe

Thank you all I was deciding which ones I should get!! Thanks!