It's been along time since I've done anything with minecraft, and with the new 1.9 update and the changes to command blocks, I've decided to put a team together (not accepting applications yet) to help me build a CTM map. But the first thing I need to do is get back into command blocks and redstone. I've slowly been teaching my self new thing about command blocks and learning how to use the new command blocks. Along with these new thing I'm learning, I've been using tools to help me. These tools are extremely helpful and quite simple to use, so here are the links to the websites that I'm going to help aid me and my team of builder and redstone engineers to start working on my CTM map.

The first ones Aren't technically websites. but a need if you are making large structures.

Word Edit is the best thing you can use to make large structures on a server without shutting down the server and using mc edit
MCedit is another editing thing you can use but it is not server or client based. It is a program that edits your world and the possible things you can do in MCedit is almost endless.

Now these are for command blocks and custom spawning entities.

Minecraft Updates This site had multiple tools, one of them is a custom entity generator and the other is a custom firework generator
Minecraft json This site is a json generator, which creates commands to put into command blocks to create some pretty cool things.

And my last tools are something that everyone should know how to do and these are

youtube
google

Both youtube and google are one of the best tools you can use to find out how to do anything. But just remember to be safe when using either of these.

All of these tools are 100% free and I do not take any credit for making these generators (Im not that great with coding anyways) and I hope this helps you in your map-making!