my 07 TCH has reached about 6600 miles. The only thing I have done for the car is do an oil change worth about 90$ at a toyota dealer when the car reached about 4200 miles. I asked for synthetic oil as I heared that's better and costed more.

Also, since the oil change costs too much, Can I do the change myself? how?
Yesterday, I finished the washer fluid and I bought and put a washer fluid.

the car indicated the low washer fuild warning. the washer fluid I bought was just regular washer fluid. Is there any special washer fluid for TCH or any washer fluid is ok?

Other then an oil change and new washer fluid, I have done nothing besides car washes.

What else should I do to keep it running good for years to come?

transmission oil change if and when? coolent fluid when? brake and power steering oil need new?
what about tire pressures?

thanks