For the Windows and Mac versions we don't have an install guide, because it's simple click and run.

(Well to be precise, there is a Mac OS guide, on our unfinished wiki. If you need it I can send you the guide.)
I am using Windows. OP mentions that I need to install SQLite3 before I install the client. When I click that SQLite3 download page, there are many files. I wonder which one I should download to install SQlite3? Also when I tried to install the client I got a message from my Anti-virus software to ask me if the file of hideexe.exe is safe? Is this hideexe.exe a file from XRC?
Hello,
you don't need to install sqlite3 as a Windows user. This is only for Linux users.
The Anti-virus software might report something, but I guarantee you that there is nothing dangerous in there. We will see, what we can do there in the future. I asked Stas (Syrenity) about it.
Edit: Stas said, that this
hideexe.exe is used to hide the DOS process (terminal). So 100% safe.

In the very early testing wallet/nodes, we had a DOS window on the desktop in addition to the main window. It really was annoying That window is now hidden by hideexe.exe.
Norton alerts on programs that are new, and untested by default. I see it every time I install an updated node. Once a number of users have installed the newest updated node, Norton recognizes it as SAFE and will not longer alert.