Filter design for frequencies in range 0-60Mhz First of all excuse me for asking a seemingly vague question. But i am going nowhere in the problem i am trying to solve. 

I am working on a powerline communication system where i need to upconvert in 28-56Mhz range and later downconvert it to 0-28Mhz so that it works in the coupler range.So i need to design a band pass filter in 28-56Mhz and a low pass filter in the 0-28Mhz range. I need to design an analog filter for the same. I have no experience of filter design. I have been looking online for resources but wherever i go there is an explanation on chebyshev, butterworth and  elliptic filters.Then you have 1st order,2nd order and higher order filters equations. My problem is from all this i am  unable to decide which type of filter to use and what order to use. So i need to understand practical design constraints and examples of how to design given certain constraints and then boiling down to a solution. So could anybody help me in how to approach the filter design problem and suggest either examples or resources to go forward.
As you stated there are some parameters associated with filters such as type of filter (butterworth, elliptic, chebyshev I,chebyshev II, bessel,...), order of filter, etc. (Note that there are lots of considerations in filter design bases on the application)

Let's first talk about the order of filters:
Filters with higher orders let you have a filter with better quality. For example in lowpass filter if you want to have a sharper transition band you need to design a filter with high order filers. Order of a passive analog filter is determined by the number of elements you use in filter (resistor, inductor, capacitors). This was all I knew about the order of the filter.

Now let's talk about the most applicable kinds of filter types. The most important difference between filter types is the band they have ripples. Note that the priority of filters is due to the application and when we say one filter is better than the other we must state that in what aspects (order, ripples, poles, zeros, stability, group delay, phase response, minimum phase, ...) this is better than that one. Picture below compares 4 important types of filters designed with the same order. As you can see, Elliptic filter has ripples both in pass-band and stop-band while it has the sharpest transition, and butterwoth filter has no ripples but has least sharpness among filters of the same order.