The International 2014

I saw this thread and decided to try out Dota2 today (first real game/bot match) and found it a bit more difficult when compared to League.

That would be the general consensus among both communities, DotA tends to be the slightly harder game.

The shop is sort of confusing. I just built what was suggested and left it at that.

The shop has a system to it, and you can change the layout. Obviously it will make more sense once you get used to it.
On the first page you have all the basic non-recipe items. On the second page you have the recipe items which include the more basic recipe items + boots. Then you have the more supportive items. And then the last 4 are split into intelligence items, weapon(DPS oriented stuff), Defensive stuff and stuff that modifies your attacks(Unique attack modifiers)
And then there's the side-shop and the secret shop with unique items that you can't buy in your base.

The way that the player camera worked got me killed multiple times. So much real estate ingame is covered by UI. I dont know if you can scale the UI.

Some computers/some resolutions have the UI cover a ton of the screen and i'm not sure why.

Outside of that I think I was doing okay. I can last hit pretty easily...I just don't know why I eat trees to regen life.

Tangos have multiple purposes, they're good for regenerating life but the reason that they can destroy trees is to give them added utility, there are many trees in paths inside the forest where destroying a single tree can give you a new escape path or against heroes that can create trees and trap you it gives you a new form of escape from their ability.