Various means of transport
In Sierra Leone, it is simple to get around Freetown by cab, okadas (mototaxis), public buses, or poda poda (private buses). When you try to leave town, the difficulty begins. Road conditions are awful - in reality, the capital is a major construction site for new highways, and in the meanwhile, you must make do with badly maintained, frequently flooded, and muddy dirt roads.
If you wish to travel outside of Freetown, you can take a poda poda – but be warned: comfort is not an option, as they are often overcrowded with luggage and passengers. If your budget permits it, you could rent a car - you'll need a 4WD and it'll cost you at least $100 each day. If you additionally want a driver (which is a good idea because he will know how to avoid the poorly maintained local roads), the cost will be considerably higher.
Some sites can only be accessible by boats, such as Bonthe, where Sherbro International Airport discontinued operations in 2002 and the extremely isolated Turtle Islands. Traveling by boat can become fairly expensive due to the scarcity of public boats.