Tutorial for beginners in starting "great-looking" Musescore ...

MANY THANKS for your PROMPT ADVICE - very much appreciated!
Tony H.

Hi Jojo:
I'd like to take the opportunity to talk to you and ask you another question: I have Pentium IV PC (using Windows 7 Home Premium) in a relatively well-maintained condition, and I'm using it MAINLY for making MIDI-arrangements using various Sequencers like BIAB, MasterTracks ...and now I was also HIGHLY recommended to explore the 'musescore' which I'm VERY EAGER to do (!). However, before I do that I'd like to ask you one question: recently I'm experiencing some 'sound glitches' during playback MIDI files within any Sequencer which I did NOT have in my system BEFORE and which is largely unchanged for few years - from your vast experience could you suggest what is the MOST COMMONLY cause of this annoying 'cracking glitches' which of course would then show up also in the RECORDING of a sequence.
I could Email you more tech-info re my PC-configuration and a list of my observations re this issue so - will you please send me a list of the MOST CRITICAL settings in my PC which could MOST FREQUENTLY be causing these 'sound glitches', and I'd then quickly send you the info you would like to have to determine possible and effective steps to take in my PC-configuration to eliminate this problem.
In advance - many thanks ...!
Tony H.

MANY THANKS for your PROMPT ADVICE, Stoichi - very much APPRECIATED!
Tony H.

Hi Shoichi:
I'd like to take the opportunity to talk to you and ask you another question: I have Pentium IV PC (using Windows 7 Home Premium) in a relatively well-maintained condition, and I'm using it MAINLY for making MIDI-arrangements using various Sequencers like BIAB, MasterTracks ...and now I was also HIGHLY recommended to explore the 'musescore' which I'm VERY EAGER to do (!). However, before I do that I'd like to ask you one question: recently I'm experiencing some 'sound glitches' during playback MIDI files within any Sequencer which I did NOT have in my system BEFORE and which is largely unchanged for few years - from your vast experience could you suggest what is the MOST COMMONLY cause of this annoying 'cracking glitches' which of course would then show up also in the RECORDING of a sequence.
I could Email you more tech-info re my PC-configuration and a list of my observations re this issue so - will you please send me a list of the MOST CRITICAL settings in my PC which could MOST FREQUENTLY be causing these 'sound glitches', and I'd then quickly send you the info you would like to have to determine possible and effective steps to take in my PC-configuration to eliminate this problem.
In advance - many thanks ...!
Tony H.