There are different ways for searching a place to rent in France. Internet is a good option as there are a substantial number of properties being advertised via it. The largest French site are http://www.seloger.com/, http://www.explorimmo.com/, and even http://www.pap.fr/ (for those who prefer to deal directly with the property owner).
Whether you envisage only a temporary stay in France or plan to settle for a long period, it is advisable to rent in the beginning rather than purchase as it gives you the time needed to familiarise yourself with an area and its amenities, and to ensure that it does suit you and your family before making a significant investment.
There are two main legal stages involved in your sale, the first contract (ie: compromis de vente or promesse de vente) and the actual transfer of title, which takes place on signature of the Acte de Vente.
A bed and breakfast (typically shortened to B&B or BnB) is a small lodging establishment that offers overnight accommodation and breakfast. Bed and breakfasts are often private family homes and typically have several rooms. In addition, a B&B usually has the hosts living in the house. Bed and breakfast is also used to describe the level of catering included in a hotel's room prices, as opposed to room only, half-board or full-board.