The harder stamps to identify tend to be those with no English words or letters, and particularly for countries occupied by foreign powers during periods of military conflict.
Occupied countries tend to have "overprinted" stamps where the new country name is printed on mediterranean diet cookbook for dummies top of the stamp in the language of the occupier.There are some useful web sites that can help with common stamps.There are many stamps around that are not game solitaire windows 7 listed in catalogues.I personally don't worry about their value, I just like sorting through them and try to complete part sets.The only drawback with stamp hinges is that they can damage the back of the stamp if they are removed for any reason.However for the majority its just a question of keeping a few stamps in an album.They are folded to enable one side to stick to the stamp and the other to stick to a page.A crumbled penny black is still worth a pound/dollar or two, because they are rare and people want to fill gaps in their collection.Never lick the back of the stamp to use its own adhesive, you do not know where it has been and this may damage the stamp.Some of the unlisted stamps can be valuable to specialist collectors.
Themes, there are many suggestions on what to collect.
You don't have be specific about one idea only.
They will usually show the value of new and posted stamps.
I find the site link below to be very useful.
These can be on the countries own stamps or on the stamps of the occupying country.
However stock books can be expensive, they are bulky and heavy.
Keep out of sun light most stamp colours will fade.These exist where the price of the stamps have either increased due to inflation, or where the currency has changed.Many people write the country name at the top, some have the pages numbered by the year, others put one set only on each page (this can look very attractive for larger sets or similar stamps).Stamp Hinges, some people still use stamp hinges to stick the stamp in albums.If they are kept loose they should be in a rigid container, like a box or a tin that is not rusty.Some collections are sorted into envelopes, this can be a cheap useful way of keeping duplicate copies, and for pre-sorting them prior to insertion in a folder or album.You do not need expensive albums to keep stamps in this way.