Anyone here knows arduino?

[Psalms23]

Hi.  I planning on making a project which is a trip wire like gadget but will trigger when something passes through a light sensor.   It will count how many times it was tripped.  I want to use arduino uno,  some LDR and an LCD. 
Anyone with knowledge about this please comment if this is possible and what other materials Im going to need.
Thanks.

[racasanuk]

Amazon were doing an offer for sensors this summer I would think what you would need for your project would be included in that