[The difference between mainland and Linden land?]

Can someone please help me by explaining the differences and avantages or disadvantages of both land types.

["Tiers process" being a beginner in land buying.]

Hello:

I have a Free Linden Home, but It is way to limiting for my beginner plans in what I would like for a home. So I have purchased, or am bidding on some land of my own. So my questions are:

1) what is the tiers listed prices or cost?

2) Do I get 512 for free, so if I give up the free land will one property be free?

3) where is all need information I should be reading?

Thanks

Fistee Forager