In order for one to become a dental hygienist, one must go and receive proper schooling rather than 'lessons.' The schooling may be done at a local tech school, medical school, or dentistry school.
To become a dental hygenist requires some formal training and certification. This should get you an idea overall of what you should be expecting. http://www.bls.gov/oco/ocos097.htm
You can find some practice tests in your local library and probably online as well. The practice tests will likely be tests that were given in the past.
There are many different places in your community that offer these classes. You can go to your local college and they can set you up with classes in this field. They can also set you up for job-shadowing in this career if you want to.
get some lessons
Orthodontist, periodontist, dental hygenist, equine dentist.
If you are looking for a good dental insurance that you can find in almost every stated, delta dental is the one to call. They are always willing to help and answer any questions you might have.
you need to get some lessons from a good teacher
In the United States, the answer depends on the specific state laws that govern the practice of dentistry and dental hygiene. Some states allow hygienists to practice on patients of record without the dentist being in the office. Other states prohibit this. At least one state, Colorado, allows dental hygienists to practice completely independent of dentists. You should consult the Dental Practice Act of your specific state for the correct answer.
Some good med tech lessons are hematology and immunology ,microbiology,clinical and urinalysis,medical terminology, direct patient care, phlebotomy. You can take a course to learn more about them.
Seniors can find good rates through AARP. If one has a subscription, AAA can be a good source for medical and dental insurance as well.
Good ideas for cosmetic dentistry marketing include hiring a good dental web design company, adding your business to the online dental directory and blogging about your business. You can hire good dental web designers from the Dentist Marketers website.
Some websites to find online singing lessons include www.thesingingzone.com, www.vocalist.org,www.onlinesinginglessons.org, and also looking up singing lessons on youtube.