The TS3660 is a good deal and the assembly isn't that difficult. There are a couple of threads over at the Ridgid forum (
www.ridgid.com and click on "forum" near the top of the page). There are three "tricks" to the assembly.
First, read the instruction manual cover to cover a couple of times. Make notes if you have to. You can download a copy of the manual from the Ridgid site if you want to preview it. This is even better if you read the manual, then read the threads on assembly then re-read the manual. Trust me, it will make sense.
Second, assemble the Herculift on the saw while it is upside down. Much easier.
Third, don't attach the wings while the saw is upside down. It will be way to freakin' heavy. The easier way is to have a couple of scrap 2x4s under the table and then after adding the legs and Herculift, you carefully right the saw. I did it myself (I'm a skinny desk jocky so it can be done solo) but it would have been a bit easier with some help. Then use the same 2x4s and some 12" or so F-clamps to help align and hold the wings (suspend the wings from the 2x4s as they are clamped to the center section of the table) while installing the bolts. Once roughly installed you can start the process of leveling the wings.
It sounds a lot more complicated when you type it out but once you read the threads and see the manal illustrations, it makes a lot of sense.
Also, there are (as of 4 months ago) still a few typos in the manual. I found one section where they talk about inserting bolts and skip one bolt, in a side panel I think. It will be quite obvious they skipped one in the instructions because you will see the bolt (and even number of them) still in you hand and see the great gaping hole where it belongs. Second, when installing the motor, they forget to tell you to snug up the mounting bolts after adjusting the belt tension.
The last bit of advice on the TS3660 is to get a better blade. The one that comes with is a thin kerf and it is one wobbly piece of junk. The splitter works much better with a full kerf blade. Freud, Forrest, PC, DeWalt, etc all good blades at all kinds of price points. Pick a nice 40T ATB combinaion blade to start.