Which boots are mostly recommended? Alpinestar Tech T or Gaerne Balance Oiled? They say ease of movement is more important than safety and hard shell which makes complete sense in Trials I think. Being a newbie, I am not sure. Thanks for your help. Another thing, is a helmet secondary for choice or weight being a big factor, do you recommend a special helmet's name?

As for boots, if you like a very soft sole (that feels like a trainer) go for the Gaerne. The Tech T's have a harder, more supportive sole. That's the biggest difference. They're both good, it's just preference.

As for helmets just buy a good one, after all it's your head: Airoh and Jitsie are both rather popular. All the good ones are very light, so pick whichever looks nicest to you.

Really already covered above...

if you like or need more support for the sole/arch of your foot AlpinStars, if feel and comfort is tops then Gaerne.  

As for helmet I would add to the above, fit, venting and protectiveness where the primary things I was interested in and the nicest ones I have seen for that are the Hebo Zone 4, Airoh TRR.  I think one of the Jitsie's are rated good there too but don't remember what one.  

If your not riding in a very hot climate most of the time then it's just fit and protection I would guess.

good luck.