It depends on the quality of the 'jacket' your border has, he may go longer than 6 months without the need to be stripped.
Are you a member of any of the BT clubs? One or other of them usually has a stripping/grooming demo during the year, and are very willing to advise newcomers.
Never be tempted to use clippers, and if you decide to use a groomer, find one that will handstrip.
hope this helps a bit.