Your english is fine - we see much worse on here, even from people who are probably native speakers.
You need to make sure that the ligation mix is less than 5% of the total volume of your transformation, so if you had 50 ul of bacteria, you would want to use less than 5 ul of ligation.
Those clones that have the insert - what's wrong with using those ones? If you pick, make glycerol stocks, and screen for the insert, then you should find the right one reasonably frequently (I usually pick about 20 colonies, will have 15 or so of those have an insert and sequence 3-5, and find the correct insert in most). The weak target fragment is probably due to inhibitors in the digest, this is most commonly caused by not getting rid of all the medium before lysing the cells for plasmid extraction.
The handbook for the kit should tell you how much PCR to use with how much TOPO vector. Using at 1:1 is not usually a good idea. Ideally you would know the concentration of both insert (PCR) and the vector, from this you can calculate the amount of insert DNA to use by the molar ratios using the following formula:
ng insert to use = ratio x (insert length (bp)/vector length (bp)) x ng of vector used
You want to keep the total amount of vector to less than 20 ng if possible, usually they work best with less DNA. Ligations can be carried out at 4, 16 or room temp (22 C is standard). The TOPO manual should tell you which one to use, but it may pay to try others. Usually the low temp ones are done overnight.
Note that all these instructions apply to standard cloning, but should also be applicable to TOPO cloning.