The following guides explain how to set up the Gridcoin Research wallet client on the platform of your choice.
If you want to run Gridcoin as a non-cruncher, you do not need to install the BOINC client. In this case, you will only earn staking rewards (you will not earn research rewards). The amount and frequency of staking rewards depends on the quantity of coins you are holding in your wallet/client.
Note that the wallet refers to being a non-cruncher as an "investor". This is not referring to investing. It just means having Gridcoin in your wallet and not trying to be rewarded for doing work on BOINC