1. Transfering the Databases
- Basically, they tell you their server information and you install the databases yourself, or upload a db backup onto their server.

2. Website Content
- Samething basically, they give you their server information and you then upload what is needed to their server. On the other hand you can maybe zip the files and send it to him/her over EMAIL or another messenger.

3. Problem Arises
- Thats just up to you, how you will go about fixing that.

4. Domain Transfer
- Yeah, namecheap allows free domain pushes. Just have to find out if your registrar will transfer the domain to namecheap.