Please note solo mining can be fairly technical, but not impossible.  First off you have 5 DigiByte algos to choose from:

1) Sha256 - Only mined by ASIC's nowadays - https://en.bitcoin.it/wiki/ASIC
2) Scrypt - Mined by Scrypt ASIC's
3) Groest - Minable by GPU's
4) Skein - Minable by GPU's
5) Minable by CPU & possibly GPU

Once you choose an algo and figure out your hardware you need to setup the appropriate mining software such as cgminer, sgminer, or BFG miner. There are thousands of possible hardware configurations and setups. This can require tedious tweaking and calibration. We have spent entire days in the past configuring miners for optimum performance.

There are some great forums out there to discover with a google search or a search of this forum. One in particular place is: http://cryptomining-blog.com/

http://cryptomining-blog.com/category/mining-software/

We should also mention unless you have a large hash farm, pooled mining is more profitable and reliable.  There are plenty of good DGB pools out there.