Hi!

[DeeksiWotlk]

hello! Im new to Warmane, what server should I pick?

[Thorbjorn]

SHORT SUMMARY

WotLK realms:

Lordaeron - ×1 experience, professions, gold, honor as it was on official realms. Bosses are tuned to be harder with higher health pools, more damage, shorter enrage timers and there is no ICC buff. In store all you can buy are mounts/pets/cosmetics for coins.
Icecrown - ×7 experience, ×3 professions, ×1 gold and honor. Bosses are the same as they were on the official realms. In store you can buy a lot of stuff, including high-end gear (Shadowmourne, heroic pieces etc.) for coins and low-end gear for points.
Blackrock - instant 80 PvP only realm. All PvE disabled, BG/Arena/Duel fest. You can get better gear with rating in different brackets.
Frostmourne - ×7 experience, ×3 professions, ×1 gold and honor. Realms is seasonal - goes through all patches of WotLK within a span of one year and then it resets with it's characters being transfered to Icecrown. Bosses are tuned to be harder with higher health pools, more damage, shorter enrage timers and there is no ICC buff. In store you can buy high-end gear and low-end gear, with the standard addition of mounts/pets/cosmetics EVERYTHING for coins and it shows up automatically once a sufficiently high number of players gets the items in the game manually.
PvP is crossrealm. Currently there's 2 tiers - 1 for characters who are at Frostmourne's current progression level with their gear which means if you get any piece of gear higher than Frostmourne's current patch you get put into the 2nd tier. The 2nd tier is exclusively people from Lordaeron+Icecrown+Blackrock ranging from 2.8k gs (with 1 epic from AH) to 6.7k+ gs full BiS players.

Can't speak for MoP realm since I haven't played it for years.

Enjoy your stay! Don't forget to read the rules before playing: http://forum.warmane.com/forumdisplay.php?f=3