The majority of hearing aids magnify sounds, usually all sounds; newer digital hearing aids focus on magnifying speech and blocking background sounds. The newer digital aids may take more practice to use, but can make conversation easier and more comfortable.
If you have been prescribed only one hearing aid, you will hear increased sounds primarily on one side of your body. This can cause disorientation, difficulty with mobility, and can make it difficult to identify specific characteristics in the environment.

In some instances, audiologists may recommend dual hearing aids for a person with vision loss to help maintain some level of "binaural" hearing (hearing from both sides of the body). Be sure to discuss these issues and concerns with your audiologist.
An audiologist prescribes a hearing aid to match each person's unique hearing needs. Ear molds, in particular, need to be specially fitted for the individual user.
Hearing aids and devices differ in terms of controls, battery usage, and maintenance. Take some time to review and learn the features of your own hearing aid.
Because hearing aids and assistive listening devices contain electronic components, take care not to drop your device or treat it roughly. Do not dip your hearing aid in water or get it wet, as this will likely harm the sensitive electronic circuitry. Wiping your hearing aid with a soft, dry cloth is usually all you need to do to keep it clean.
These listening exercises and experiences are listed in order from easiest to most difficult:
Links:
[1] http://www.visionaware.org/american_academy_of_audiology_0
[2] http://www.visionaware.org/American-Association-Deaf-Blind
[3] http://www.visionaware.org/helen_keller_national_center_for_deaf_blind_youths
[4] http://www.deafblind.com/manual.html
[5] http://www.deafblind.com
[6] http://www.shhh-rochester-ny.org/greatexpectations.htm