As others have noted, the web site you mentioned is not only NON-Catholic, it is ANTI-Catholic.
I find Protestant bible sources to be useful, only if I stay well-tuned to and be careful of the anti-Catholic biases, and those can be very subtle.
Catholic Bible scholars have dragged a lot of Protestant Bible interpretation into the Catholic Church. There are plenty of threads here in the forums about the most prevalent and influential of these, modern historical criticism.
Catholic Bible Scholarship seems to have been lagging (for good reason) until Pope Leo XIII re-opened Catholic scholarship of the Bible, with cautions about that very thing, of dragging in the ideas of heretics into the Church.
Even Catholic books bearing an imprimatur and nihil obstat – which are supposed to indicate their acceptability for Catholics – can be very misleading, as they plainly contradict long-standing Catholic doctrine. It was for that very reason that Pope John Paul II and the bishops of the world, under the supervision of Joseph Cardinal Ratzinger, compiled the Catechism of the Catholic Church as a modern summary of authentic Catholic teaching.
After the Second Vatican Council, even Pope John Paul II said there was a springtime in the Church with respect to a flourishing of evangelization. Sadly, many Catholic scholars are not speaking with the voice of the Church. The CCC is being suppressed even in my former parish. I think that springtime metaphor is not totally accurate.
I refer you to other threads about Bible Study, for further information. See the threads about Dr.Scott Hahn, for example.