も - mo

Hello!

Can someone please help me understand the use of the particle も in lesson 2.2?

ここ　で　しゃしん　を　とって　も　いい　です　か
Koko de shashin o totte mo ii desu ka? / Is it alright to take photos here?

しゃしん　を　とって　もらって　も　いい　です　か
Shashin o totte moratte mo ii desu ka? / Could you take a photo for me?

In reading up on "mo" it seems that it's used to indicate "too" and "also, and to express and agreement or similarity.  If that's the case, I'm not understanding its usage here.  Could someone please enlighten me?

And.. would it be more appropriate to say ありがとう　ございます at the end of this post because my thanks is not "for something in the past" as opposed to ありがとう ございました which I believe is something more indicative of a past tense thanks?

Think of it as "also is it alright to take a photo here" and "also can you please take a photo"

Japanese is completely the opposite and totally different grammar to English. It is hard to start with but you have to forget what is correct in English and think entirely Japanese.

It's not really clear when first introduced by Rocket Japanese, but ～てもいい is a set verbal expression.

These links might help explain:
https://www.nhk.or.jp/lesson/english/teacher/14.html
http://maggiesensei.com/2015/06/22/how-to-use-%E3%81%A6%E3%82%82-temo/ 

I think ありがとう ございます is more appropriate as it's the non-past form.

(eta: changed construction to expression—more I accurate, I think)

Ah, so helpful  - now I understand :-)

ありがとう ございます!

The Maggie Sensei link is VERY thorough and goes beyond what is introduced in Level 1 Rocket Japanese, but there's plenty of info even for a beginner. It would be great if Rocket offered "related links" to free resources with lessons. Maybe I'll add it to my Rocket Wishlist.