Cyanogen Mod is an open source project and the community has developed CM11 for the Acer A510 android tablet. You need have unlocked boot loader and have CWM / TWRP recovery pre installed. We recommend you to do a nandroid backup before you proceed.
Do a Nandroid Backup
Wipe data / factory reset if coming from another ROM or version of CM. If you are already on CM11, just make Wipe Cache & Wipe Dalvick-Cache for a proper upgrade.
Install the ROM using appropriate ClockworkMod Recovery
Install the adapated Google Apps
Use Official CM Gapps or Latest Paranoid Gapps for 4.4.4
CM11 is the best alternative if you are in the market for vanilla experience. There are no Google apps in it, so we recommend downloading and installing them separately.