Thanks guys for your informtive answers. Also Sunny, your answer for #5 was helpful. I have a few more for ya'll:
1) Read Masonmance's Post
2) You have the wrong mindset. Many non top-tier characters actually can start a juggle,but can't follow up because of our flotiness, frame 4 dair, and momentum shift options using nuetral B and side-B.
Supplemental Video:
http://www.youtube.com/watch?v=rvc2HV1oAFE
Just look at how trela creates pressure using WELL SPACED aerials against Nairo. Sometimes Nairo see past them and just waits to attack, but avoiding every little shouldn't be your goal. The goal should be minimizing the damage you take while taking stocks off your opponent. I don't believe in taking unnecessary damage, but if you aren't out of the blast zone you can still fight. Right?
3) Ftilt is really your best alternative in situations where fsmash would be appropriate. I'm not really sure what poke range is
Masonmance. If you could expand that would be great. Dtilt can be a substitute, but it isn't the most effective tool in most situations. The hit box and frame data is better if other situations. It can be a nice mix-up up option.
4) Practice and watch videos. I don't like set responses to this because it creates robotic like game play which is predictable. Now a lot of people say mix it up ,but what does that mean?
So if you have a strong hunch that your opponent is going to spot dodge then just wait and a grab. The timing takes a bit of practice. If you didn't know there are a few frames that after a spot dodge your opponent no longer has invisibility, but can't move.
5) I'm going to get tell you the truth accept or leave it. If you accept it you can only improve.
There is no such thing as rolling too much. The only thing bad is rolling predictably. Rolling is only a TOOL. Lucario's role very good mechanically speaking, but using it predictably is bad because it goes a set distance everytime and had the same cool down frames everytime time you use it.
If you want to learn how to improve and use rolling properly I recommend watch high level ZSS and lucario games. A lot of the tricks the ZSS uses works with lucario. An example is hit shield with Jab>roll > jab> roll> grab/jab combo. You can mix up this string and you will find your opponent will often do something stupid and reveals their spot dodge or shield habits. Wore case scenario is that you get his a bit and you now know what won't work or that you need to mix it up even more.
6) I play with tab jump off, so it doesn't matter. If you have tap jump on then you have to use a slight tilt to get the uptilt.
7) Yes it is. The timing is a bit difficult and fsmash isn't always the best option, because it doesn't allow for follow-up. Grabbing then downthrow is really good. this move allows you to follow-up and at least put pressure on to your opponent. Also Aurashpere is good if you opponent is air dodging into the stage. Ftilit is easier to hit with since it lingers on for awhile and it is fast.
8) Read Masonmance's Post
9) Read Masonmance's Post
10)Video supplement:
http://www.youtube.com/watch?v=k7bVk5-4--0
CT ZeRo has posted an excellent guide. I recommend you watch it and some of his other videos. This video explains a lot.
I hope this helps. I know it is a lot to read, but I tried to be thorough with my answers. If you have any other questions don't hesitate to ask.