You need to format a micro SD card with FAT32 file system and unzip the file below,
http://www.load64.com/up/sd.zipCopy the contents inside the folder called sd to your SD card.Make sure browser.prg is at the root,otherwise you will get "Press Play on Tape" message.
You can use any micro SD card upto 32GB in capacity.Try to use 8 or 16GB even smaller if possible.Few users had problems with the 32GB ones.If you are using a Mac,it might create duplicate files on the SD card.
You can change any folder and file on the micro SD card but you need to keep the browser.prg at the root folder.You can find tons of games,demos,apps etc in PRG format at the following link,
http://www.planetemu.net/machine/commodore-64You can load the browser by pressing the SHIFT and RUN/STOP keys or by typing LOAD command and pressing the RETURN key.
How to create TCRT files:1.
Download Tapecart Bundler.rar and open it to your desktop.
2.Copy your PRG files to the folder called PRG.You need minimum 2 PRG files.You can't convert a single PRG file to TCRT.
3.Double click Runme.bat. It wil create game-Vol#1.tcrt Rename it before moving to your SD card.