Karmil,
The Request gets created on Request_Waizard_Step1, where you need to add the Title and Description. At Step2, you are creating a RequestLine, so, you need not display the Request, it should be passed on as a parameter from Step1, you cannot choose a Request. At Step2, just enter the RequestLine details i.e. “What Items you want” and their price. AT Step3, of course the Title will be Read-Only, since its a review page for the Request. The Instructions in the learning path at this steps are very short and a bit confusing, hence you missed this point. Do let me know, if you need any further assistance