toyota dealer I found a web site where you can get a manual for free as long as you join. It is by toyota i got my manual from there. https://auth2.toyota.com/owner/web/page/home I was lokking for the fuse box and this has the whole manual. Hope it helps you!
buy the service manual
You can buy a new, book (paper) version directly from the Toyota website, but they are expensive. I don't know why they don't sell cheap electronic versions (are they really focused on profits from repair manuals??). I bought my repair manual used on eBay for a big discount over new so do some searching. Finally, its totally unauthorized, but if you really search, you can find an electroinc (PDF) version of the echo/yaris repair manual floating around for free on the internet. I believe its technically the 1998 Yaris manual, but its pretty much identical to the 2000-2002 Echo manual although its missing some portions of the real manual.
You can get a refurbished one for about $70. See: http://lmgtfy.com/?q=toyota+echo+mass+airflow+sensor
Depends if you have automatic or manual transmission. Automatic trans fluid is type T-IV, which is a special type made by Toyota, I think I heard somewhere that a 3rd party was selling this type but I haven't seen it personally. You can buy T-IV ATF from the dealership or some online places including eBay at a slight discount.
BUY A HAYNES MANUAL BUY A HAYNES MANUAL
A used Toyota Echo can be easily found at any reputable used car dealerships. Additionally, online websites such as AutoTrader and Motor Trend carry used Echos for sale.
I very much doubt you can buy that on it's own. It usually comes only with a balljoint.
you will have to contact the dealer(toyota)
Buy a grand prix
Buy a Haynes shop manual for 1997-2001 Toyota Camrys. They're about $15.
I would suggest to buy a service manual on your vehicle and then determine on how you want to approach this. Telling you on how and what to do along with the right tools is impossible.