I'll put a review of your deck real soon, so it's coming!
As for how to do the tabs -
When you go to create a deck use the Normal Deck Builder (the deck builder that doesn't have the whole user interface) and if you have a deck already in place you should see something like (using your deck):
// Main
1
Crawlspace 1
Esper Panorama9
Plains 1
Obelisk of Esper 1
Pristine Talisman 1
Nevinyrral's Disk 1
Dimir Guildgate 1
Command Tower 1
Temple of the False God If you have this then you can directly edit it in the text box. Like maybe:
//Basic Lands
9
Plains//Mana Fixing Lands/Ramp
1
Temple of the False God1
Command Tower//My most precious Guild Gate
1
Dimir GuildgateSo you just head the category with "//<Name>" and then you just put whatever cards you want under that category. Also, it's very very important that you don't automatically group your cards by type if you're doing this unless you want to
erase all of your work!
The one last
warning I'll give you is that if you're planning on making additions and whatnot to your deck, don't format it. Wait until you have exactly what you're happy with and then format/group your cards. Until you group them, you can semi-group them by just having the system group your cards by type (which is an option above the analyze deck button)