I understand you know about tutorials, but TopHATTwaffle has certain videos that explain EVERYTHING you need to know on that topic. An example would be his optimization video, if you watch that, you'll know everything about optimization.
If you make a block, click on it, do edit and press "Make hollow" this will make a room with 4 walls, a roof and a ceiling in seconds, it's a very helpful feature and I'm not sure if you knew about it already.
Tratman Wrote: Has anyone got any tips for Hammer/Sledge for a person making their first map? I know there are a few YouTube tutorials but is there anything that isn't obvious which might help?