Ack I wish I read this sooner, I've been basically following the recommended items when I first started. I've been playing so much LoL that I haven't been coming on ulmf that frequently.
Dude this
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is awesome. This will be quite useful for me to plan out which runes I'll need when I hit lvl 20. I haven't touched the runes section at all. My friends tell me to not buy Tier 1 or 2 and just wait for Tier 3 runes.
It took me a while to wrap my head around the building and character development in LoL. I feel like in DotA you can make more random or unique builds work, whereas in LoL characters are generally more tied to AP, AD, and Tanking (probably missing an essential category).
I tried out Archangel's Staff and I personally really like it, but my friends tell me I should forgo Archangel and build something like Deathcap first. Their reasoning was that it takes too long to build up the Archangel Staff passive mana bonus.
I did try goofing around with Ahri and made an ineffective, messed-up build with the following items: Sunfire cape, pene boots, warmong, force of nature, and something else. Needless to say I didn't do much. BUT I did manage to miraculously get a kill with the Sunfire Cape AoE damage oO.
The build I've been going for mainly with Ahri is boots, two doran's rings for the early build directly into Rylai, and then Deathcap. After that I build depending on the situation.
I also tried out Skarner, but I suck balls with him. I'm not very good at reading the flow of the battle so I always end up jumping in per-maturely and getting my ass kicked. But I can't give up on Skarner because he reminds me of Sand King in DotA.